Means for attaching collars or pulleys to shafting.



Patented Nov. 25-, 902

0. l.'. POTTER. MEANS FOR ATTACHING COLLARS 0B PULLEYS 'l'll SHAFTING'.

gApplication filed Mar. 25, 1902.)

(No llodah) NlTiED STATES DUANE L. POTTER, OF CLIFFORD, PENNSYLVANIA.

MEANS FOR ATTACHING COLLARS OR PULLEYS TO SHAFTING.

SPECIFICATION forming part of Letters Patent No. 714,605, dated November25, 1902.

Application filed March 25, 1902. Serial No. 99,951. (No model.)

To all whom it may concern:

Be it known that I, DUANE L. POTTER, a citizen of the United States,residing at Clifford, in the county of Susquehanna and State ofPennsylvania, have invented certain new and useful Improvements in Meansfor Attaching Oollarsor Pulleys to Shafting; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to split collars or pull'eys for shafting.

The object of my invention is the production of a split collaror pulleyfor shafting for sustaining a saw-arbor or other device longitudinallyupon the shaft and retaining it in its proper place and permitting thesaid collar or pulley to be readily applied to or removed from theshafting without interfering with the other machinery or parts carriedby the shafting.

A further object of my invention is the production of a collar or pulleyof such a design that when the parts of the same are brought together toform a complete collar it will be absolutely impossible to separate thesame Without bringing the parts to a particular position for admittingof such separation and that when the parts are in position to form acomplete collar said parts will be held against any lateral movement,even though one of the securing parts be removed.

A further object is to so construct and arrange the parts that mortiseor tenon joints are produced at the separating ends or parts of thecollar, and the securing-pin is applied at a point to one side of theline of separation, so that a very strong, positive, and continuouscollar or pulley is secured without any depression in the outerperiphery there-- upon the shafting for retaining them in their properposition. These collars are also employed on shafting carrying circularsaws, and such shafting, in addition to carrying the saw, carries ashrunk arbor, boxing collar, drum, or pulley, and feed or gear wheels.It is particularly important and necessary in shafting carrying a sawthat the arbor and boxing should be held firmly in place, so as toprevent the saw having any endwise movement, which movement would heatthe saw almost immediately during the sawing operation and hinder andfinally prevent such further operation.

My device is designed to insure the saw from having any such movementand to permit the collar or pulley to be readily applied to and removedfrom the shafting; but of course it is obvious that it may be applied toany shafting irrespective of what is carried by the same.

My improved collar or pulley comprises two sections or members 1 and 2,as clearly shown in Fig. 1, the said sections being semicircular inoutline and when brought together make a complete circle which is smoothand continuous on its outer surface, as well as at the bore or innersurface of the collar or pulley. The section or member 1 is providedWith a tongue 3 on one of its ends and with a socket or recess 4 on itsother end, and the section or member? is provided with a socket orrecess 5 to receive and retain the tongue 3 of the member 1, as clearlyshown, and the other end of the section or member 2 is provided with atenon or tongue 6, which enters the mortise or socket 4 of the member 1.The socket or mortise 5 of the member 2 is provided with a shoulder 7,and the tongue or tenon 3 is provided with a shouldered or cutoutportion 8, which latter engages with the shoulder 7, formed in therecess 5. The upper wall of the recess portion 5 is curved, as

at 5, and the tongue 3 is also curved so as,

to readily enter or pass in or out of the recess 5 in a pivoted orhinged manner. It will be observed that when the sections are togetheras in Fig. 2, with the shoulder 7 engaged by the shoulder 8 of the tenon3 that it would be impossible to separate the sections, even when thepin 9 is not in position, without first separating the sections ormembers'at the point where the tenon or. tongue 6 enters the mortise4which is to say, the sections or members are positively locked againstradial separation at the point where they come together, irrespective ofthe securing-pin 9, and could not be separated by simply pulling thesections apart on a straight line without first separating the sectionsat the point where the tenon 6 enters the mortise or recess 4, and thusdiffers from those collars or pulleys which separate alike at points ofseparation. By forming the sections or members with inortises and tenonsa very strong and compact construction is secured which prevents thesection from being moved laterally and all strain does not come upon thetongues or tenons. The tongue or tenon 6 of the member 2 is providedwith a semicircular recess 10, and the mortise 4 of the member 1 isformed in one of its vertical walls with a semicircular. recess 11,which registers with the semicircular recess 10 when the sections aretogether,.and the walls of these recesses are preferably-threaded, andthe pin 9 is passed through the registering aperture, as clearly shownin Fig. 2, and by being screwed down tightly its lower end comes incontact with the shafting l2 and firmly impinges against the same. Thesections being firmly locked, it is impossible for the collar to rotateor move laterally- However, to further guard against any liability ofthe collar or pulley having any movement on the shaft an additional pin,as 13, may be provided, which latter is seated in a recess 14, formed inone of the sections of the collar or pulley, and its other end insertedin a recess 15, provided in the shaft 12 for that purpose. Anysuitablenumber of these pins may be employed.

An important feature of my construction is that the securingpin 9 doesnot pass through the sections or members of the collar at the line ofseparation, but to one side thereof. This is important, for the reasonthat a much stronger construction is secured thereby and a constructionnot so likely to separate or become broken at the points of separation.

Another important feature is that by arranging the screw 9 in theposition as employed by me it has no tendency whatever to weaken thejoint, as in some constructions that is to say, only one-half of thescrew passing through the said tenon produces a firm and solidgrip,which cannot be separated unless the screw be removed.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A split collar or pulley comprising in its construction two sectionsor members one of said sections being provided with a tongue having ahead or shoulder and also with a mortise and the other section beingprovided with a mortise having a shoulder for engaging the head orshoulder on the tongue of the first-mentioned section and said secondsection being also provided with a tonguewhich enters the mortise in thefirst-mentioned section, and a pin engaging the two sections for lockingthe same against disengagement, substantially as described.

2. A split collar or pulley comprising in its construction two sectionsor members one of said sections being provided with a tongue having ahead or shoulder on one of its ends and with a mortise on its other end,and the other section being provided on one of its ends with a mortisehaving a shoulder for engaging the head or shoulder on the tongue of thefirst-mentioned member and said second member being also provided with atongue on its outer end which enters the mortise in the first-mentionedmember, and a pin engaging the two sections by passing through themortise and tenon to one side of'the line of separation, substantiallyas described.

3. A split collar or pulley comprising in its construction two sectionsor members, one of said sections being provided with a tongue on one endand a mortise on the other, and the other section being provided with amortise on one end and a tongue on the other, the last-mentioned tongueand mortise being provided with semicircular registering apertures and apin passing through said registering apertures for locking the sectionstogether, substantially as described.

4. A split collar or pulley comprising in its construction two sectionsor members, one of said sections being provided with a tongue on one endand a mortise on the other, and the other section being provided with amortise on one end and a tongue on the other, the last-mentioned tongueand mortise being provided with semicircular registering apertures toone side of the line of separation of the sections and securing meansextending into said apertures, substantially as described.

5. A split collar comprising two sections having their ends detachablysecured together at one point of their separation, the other end of oneof the sections being provided with a tongue and the corresponding endof the other section formed with a mortise for receiving the same, and apin passed between said tongue and one wall of said mortise for lockingthe parts together, substantially as described.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

DUANE L. POTTER.

Witnesses:

W. W. BAYLOR, GEORGE BEER.

IIO

